/****************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one   *
 * or more contributor license agreements.  See the NOTICE file *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
 * with the License.  You may obtain a copy of the License at   *
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 *   http://www.apache.org/licenses/LICENSE-2.0                 *
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 * Unless required by applicable law or agreed to in writing,   *
 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 * KIND, either express or implied.  See the License for the    *
 * specific language governing permissions and limitations      *
 * under the License.                                           *
 ****************************************************************/

package org.apache.james;

import java.util.Set;

import javax.annotation.PreDestroy;
import javax.inject.Inject;

import org.apache.james.task.Task;
import org.apache.james.task.TaskType;
import org.apache.james.util.Runnables;

import com.github.fge.lambdas.Throwing;
import reactor.core.publisher.Flux;

public class CleanupTasksPerformer {

    public interface CleanupTask extends Task {
        default TaskType type() {
            return TaskType.of("cleanup-task");
        }
    }

    private final Set<CleanupTask> cleanupTasks;

    @Inject
    public CleanupTasksPerformer(Set<CleanupTask> cleanupTasks) {
        this.cleanupTasks = cleanupTasks;
    }

    @PreDestroy
    public void clean() {
        Runnables
            .runParallel(
                Flux.fromIterable(cleanupTasks)
                    .map(cleanupTask -> Throwing.runnable(cleanupTask::run).sneakyThrow()));
    }

}
